<template>
	<div>
		<city-header></city-header>
		<city-search :cities="cities"></city-search>
		<city-list :cities="cities" :hot="hotCities" :letter="letter"></city-list>
		<city-alphabet :cities="cities" @chang="handleLetterClick"></city-alphabet> 
		<!--	@chang="handleLetterClick" 父组件接收进行监听-->
	</div>
</template>

<script>
import CityHeader from './components/Header'
import CitySearch from './components/Search'
import CityList from './components/List'
import CityAlphabet from './components/Alphabet'
import axios from 'axios'

export default {
	name: 'City',
	components: {
		CityHeader,
		CitySearch,
		CityList,
		CityAlphabet
	},
	data () {
		return {
			cities: {},
			hotCities: [],
			letter: ''
		}
	},
	methods: {
		getCityInfo () { /*获取数据*/
			axios.get('/api/city.json')
				.then(this.handleGetCityInfoSucc)
		},
		handleGetCityInfoSucc (res) { /*接收数据结果*/
			res = res.data
			if (res.ret && res.data) {
				const data = res.data
				this.cities = data.cities
				this.hotCities = data.hotCities
			}
		},
		handleLetterClick (letter) {
			this.letter = letter
		}
	},
	mounted () { /*写一个生命周期函数*/
		this.getCityInfo()/*定义一个方法*/
	}
}
</script>

<style style="stylus" scoped="">
</style>